Movable base mounted axially collapsing type tire removing device



April 9 T. M. JOHNSON ETAL 2,439,135

MOVABLE BASE MOUNTED AXIALLY COLLAPSING TYPE TIRE REMOVING DEVICE Filed Jan. 25, 1945 2 Sheets-Shet 1 April 1943- IT. M. JOHNSON ETAL 2,439,135-

MOVABLE BASE MOUNTED AXIALLY COLLAPSINQ TYPE TIRE REMOVING DEVICE Filed Jan. 25, 1945 2 Sheets-Sheet 2 iatented Apr. 6, 1948 MOVABLE mes 2,429,135 MOUNTED extents (3.011 I LAPSING TYPE TIRE REMOVING DEVICE V Theodore M. Johnson, Burbank, and Edgar v "ReecLL-os Angeles, Calif; Applicationdaniiary 25, 1945, Serial No. 574,456

3 Claims.

Our invention relatesi to tire removing tools,

and more particularly to a tire removing tool designed for'removinga tirefrom a wheel without removing the wheel from the vehicle; and it has among its salient objects: To providea tire, removing qt'ool mounted upon a carrier which.

can be moved on wheels up to a wheel, much as isa lifting jack, and operated for -removing the tire from the wheel while the wheelremains 'on the vehicle; to provide a tool of the character. referred to. having two, arms which can be brought up ."totheppposite sides of the tire and which arms h ave power means for operating them together against ithe epposite sides of the tire in such a Way as to press theopposite sides. of the tire inwardly and intothe middle clearance space in the tire rim; to provide a tire removing tool having cooperating arms for compressing the tire at its opposite sides and with a cylinder with pistonstherein connected with said arms for furnishing the-mower for simul-' taneously operating saidarms for removing the tire; to provide in connection with the two arms of a tire removing tool, latch means for catching on the outside of the edges-of the rim for holding the tool in operating position; and, in general, to'provide a new and improved tire removing tool which is practical and efficient in removing tires from wheel rims without removing the wheel from the vehicle.

In order to fully explain our invention, we have shown one practical embodiment thereof on the drawings herewith, which we will now describe.

Referring to the drawings in detail:

Figure 1 is a plan view looking down upon a tire removing tool embodying our invention, showing the rim and tire in section;

Figure 2 is a similar view, showing the arms moved inwardly, with the tire beads in the clearance space in the middle of the rim;

Figure 3 is a side elevation of the tire removing tool;

Figure 4 is a sectional view taken on the line 4-4 of Fig. 1; and

Figure 5 is a fragmentary sectional view taken on the line 5-5 of Fig. 1..

Referring now in detail to the drawings, our invention is shown mounted on a carrier base or platform 6, having front wheels I, I, and castor wheels, as 8. Mounted on the front of said base or platform is an upstanding frame structure 9, 9, with an inclined track-way l0, made of angle irons and extended rearwardly to a supporting member II for each track member.

In the rear of said base or platform are two (Cl. JET-6 "foot plates 12,- IZ, for holding the tool forwardly toward the tire with the foot, said platesalso having adjacent side portions [2, l2", between which an operating tubular handlefmember 1'3 5 is :pivotally supported on 2. depending arm 2|,

the pivot being designated T4. A valve operating rod i-5fis shown extended through said tubular handle 3, andprovided with a gear' 15" in mesh with a cup1-ike;gear '16 on a valve rod T61 ex- 10 tended into a reservoir and valve mechanism designated 23 and-from which a flexible hose 11 extends to a cylinder I 8, mounted on the trackway 1-0, and again referred to.

A hydraulic pump I 9 is shown under said base 15 or platform 6 with piston rod 20, connected with the arm 21, on said handle L3, as at 22, whereby the movement of sa-idhandle i3 and rod [5 up and down slightly, operates said pump in a well known manner, for forcing-the fluid into the cylinder 18, from-the reservoir 23, in any suitable manner. This mechanism, of itself, is no part of the present invention, as any power developing means can be used with the cylinder [8 for operating the tire compressing arms, which we will now describe and which constitute the real invention of this application. a

Our invention resides largely the provision of two. tire pressing armspdesignated 24 24, pivotally supported, as at 25, 25, on the upstanding frame structure 9, 9, with their rearward ends connected with a coiled spring 26, and with two piston rods, 21 and 28, on pistons 21' and 28', shown in light broken lines in the cylinder l8, before referred to. Said cylinder has a partition I8 formed therein, separating the opposite ends of the cylinder, with a communicating port 29 therein and with a fluid supply connection at 39, as shown in the sectional view in Fig. 1, whereby the operating fluid can be directed into the adjacent ends of said cylinder l8, for moving the pistons and piston rods outwardly, for spreading the rearward ends of said tire pressing arms 24, 24, as clearly indicated in said Figs. 1 and 2, and thus compressing the forward or operating ends of said arms toward each other.

The tire engaging ends of said arms or prongs 24, 24, are provided with fiat feet portions, as 24', 24, and with a latch mechanism for catching on the edges of the rims as the tool is pressed into place between the rim and the oppospring 33, said stem operating through a lug portion 34', on the end of each arm 24, as shown. A set screw 35 is shown for determining the movement of the arm inwardly, as indicated in Fig. 2.

The function of these latch mechanisms is well illustrated in Figs. 1 and 2. In Fig. 1, as the tool is being forced toward the tire so as to insert the feet portions 24', 2 4 of the arms 24, 24, between the rim R and the tire T, the latch hook 3| will be pushed past the edge of the rim R until it hooks on the edge of said rim R, as seen in Fig. 2. This holds the tool against backing 01f v or moving irregularly, as both sides, or both arms are held on the rim.

Referring to Fig. 5, the cylinder I8 is provided with a depending screw or bolt 36, with a washer like roller 31 thereon, operating between the track members [0, and with a forwardly extending rod or member 38; sliding through a guide element 39, between said track members ID, for

holding saidqcylinder 18 from rocking, or tilting, as it moves slightly with'the operation of said tire-engaging arms or prongs 24, 24. I

The piston rods 2'! and 28, of the cylinder l8,

are adjustably connected with said arms, as at 46, with a screw connection, for a purpose which will be obvious in getting accurate adjustments for the operating arms 24, 24, which compress the opposite sides of the tire into the clearance space Rof the rim Rf We do not limit our invention to the details of construction and arrangement here shown other on the opposite sides of said tire and into the opposite sides of the rim, for compressing them inwardly, latch means on the ends of said arms to automatically hook over the edges of the rim for holding said tool to the wheel, and

manually operable means for controlling the said power means.

- 31A tire removing tool of the character rearms mounted thereon with their outer, or opf. crating ends provided with tire-engaging feet to for explanatory purposes, except as we may be limited by the hereto appended claims We claim: Y

1. A tire removing tool including a carrier therefor, two arms movable toward and from file of this patent:

each other to embrace and compress the opposite 'sides of a tire while on an upstanding wheel,

- sition to engage said tire and for removing it.

2. A tire removing tool'including a carrier to operate between the opposite sides of a tire and "the opposite inside edges of the upstanding rim on which the tire is mounted, said arms also having spring latch means positioned to engage a'ndhopk on to the outside edgesof said rim to hold said arms in place as they are operated to compress the opposite sides of the tire inwardly, power means operable between the ends ofsaid arms for moving them together at their -tire compressing ends, spring means for returning said arms in normal positions, and manually operable means for moving said carrier base and for controlling said power means.

' THEODORE M. JOHNSON.

EDGAR G. REED.

REFERENCES CITED The following referencesare of record in the 1 UNITED STATES PATENTS,

Number Name Date 1,066,210 Mahon July 1, 1913 1,936,817 Allen NOV. 28, 1933' 1,964,119 Hendry June 26, 1934 1,966,766 Raby et a1 July 17, 1934 2,043,169 Hawkinson June 2,1936

2,212,768 'Bonneau Aug, 27,1940

2,281,476 7 Casey Apr.'28, 1942 2,326,684 Ross ..Aug. 10, 1943 

